Complete the sentences by writing the verbs in the present perfect. 1) i (just / buy) a blue mobile phone. 2) (you / ever / see) a solar eclipse? 3) my brother (never / be) to a planetarium. 4)we (not / hear) their new cd yet. 5)how many words (you / write) for your history project? 6)veronica (not / have) her breakfast yet. 7) what (they / do) to the computer? 8)where (i / leave) my keys? 9) simon (not / meet) andrea's parents yet. 10) (you / ever / eat) fish for breakfast?

1. have just bought
2. have you ever seen
3. have never been
4. have not heard
5. have you written
6. have not had
7. have they done
8. have i left
9. has not met
10. have you ever eaten

1) I have just bought a blue mobile phone.
Explanation: The action of buying the blue mobile phone has just been completed, so we use the present perfect tense.

2) Have you ever seen a solar eclipse?
Explanation: The question is about the past experience of seeing a solar eclipse, so we use the present perfect tense with "ever".

3) My brother has never been to a planetarium.
Explanation: The action of visiting a planetarium has never occurred up until now, so we use the present perfect tense with "never".

4) We have not heard their new CD yet.
Explanation: The action of hearing their new CD has not happened up until now, so we use the present perfect tense with "not yet".

5) How many words have you written for your history project?
Explanation: The question asks about the number of words completed so far in the history project, so we use the present perfect tense with "how many".

6) Veronica has not had her breakfast yet.
Explanation: The action of having breakfast has not occurred up until now, so we use the present perfect tense with "not yet".

7) What have they done to the computer?
Explanation: The question asks about the actions performed on the computer, so we use the present perfect tense with "what".

8) Where have I left my keys?
Explanation: The question asks about the location of the keys, which is a past action and its consequences in the present, so we use the present perfect tense with "where".

9) Simon has not met Andrea's parents yet.
Explanation: The action of meeting Andrea's parents has not happened up until now, so we use the present perfect tense with "not yet".

10) Have you ever eaten fish for breakfast?
Explanation: The question asks about the past experience of eating fish for breakfast, so we use the present perfect tense with "ever".